GLOSSARY. 51 



F&ies'tra rotun'da (L. round window). A small round 



opening in the tympanum of the ear. 

 Fenes'trated (L. fenestra, a window). Applied to a membrane 



which exhibits a number of openings in its texture. 



Applied specially to the lining coat of the arteries first. 



described by Henle ; also to a layer of the retina. 

 Ffbra primiti'va (L. primitive band). The axis-cylinder of a 



white or medullated nerve fibre. 

 Ffbrae arcifor'mes (L. bow-shaped fibres). A set of white 



fibres in the medulla oblongata. 

 Fibrilla (L. a little fibre). Applied, to any small threads, such 



as those which make up a striped muscular fibre. 

 Fi'brin. (L. flbra, a fibre). The fibrous substance formed in 



the coagulation of blood, lymph, &c. 

 Fibrin oplas'tin (Gr. plasso, I fashion). A substance which, in 



combination with fibrinogen, forms fibrin. 

 Fibrospon'giae (L. flbra, a fibre; spongia, a sponge). The 



name given to the sponges having a fibrous skeleton. 

 Fi'brous. Made up of fibres. Applied to a form of tissue 



which under the microscope shows a fibrous structure. 

 Fi'bula (L. a clasp or buckle). - The small bone of the crus or 



leg. 

 Fibula/re. A bone of the tarsus which articulates with the 



fibula. 

 Filiform (^L.fllum, a thread; forma, shape). Thread- shaped. 



Applied specially to some of the papillae of the tongue. 

 Filoplu'ma (L.filum, a thread; pluma, a downy feather). A 



term applied to a feather which has a long scapus and 



small vexillum. 

 Fi'lum termina'le (L. terminal thread). The small filament in 



which the spinal cord terminates posteriorly. 

 Fim'bria (L. a fringe). Applied to the fringe-like processes of 



the Fallopian tubes. Also applied generally to fringe- 

 like processes. 



Fis'sion (L.fissio, a splitting or cleaving). A method of non- 

 sexual reproduction amongst the lowest organisms, in 



which the body of the parent spontaneously splits into two 



or more parts. 



Fissiparous (L. fissus, cleft; pdrw, I bring forth). Multiply- 

 ing by division into equal parts. 

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